Rheid liquid-filled underwater glider with nearly neutral buoyancy

Abstract

The invention discloses a rheid liquid-filled underwater glider with nearly neutral buoyancy. The glider comprises a rheid liquid-filled cabin, a pressure-resistant cabin, a front fairing, a rear fairing, a wing unit, a buoyancy adjusting unit, a posture adjusting unit, a main control unit and an antenna unit; the rheid liquid-filled cabin is made of a flexible skin and assembled outside the pressure-resistant cabin and can be filled with compressible liquid; an outer skin of the buoyancy regulating unit is in direct contact with seawater, and a high-pressure pump and an inner fuel tank of thebuoyancy adjusting unit, the posture adjusting unit and the main control unit are arranged in the pressure-resistant cabin; the front fairing and the rear fairing are arranged at the front end and the rear end of the pressure-resistant cabin respectively; the wing unit is arranged on the rear fairing, and the antenna unit is arranged at the tail of the rear fairing. The glider can realize passivebuoyancy compensation based on marine environment pressure and temperature changes, the glider has nearly neutral buoyancy in the running process, and energy consumption caused by buoyancy adjustmentin the moving process of the glider is reduced.

Description

technical field [0001] The invention belongs to the field of underwater vehicles, and in particular relates to a near-neutral buoyancy underwater glider which utilizes liquid filling for adaptive buoyancy adjustment. Background technique [0002] Underwater glider is a new type of marine detection and monitoring equipment, which has the characteristics of long battery life, wide cruising range, low cost, easy operation and intelligence. By carrying different sensors, it can efficiently complete a variety of marine environment detection and information collection tasks. . The working principle of the underwater glider is to use small buoyancy changes to drive the movement in the longitudinal plane, and the energy consumption is significantly reduced. The increase in the density of seawater in the vertical direction during the operation of a traditional rigid underwater glider will increase the buoyancy of the glider, while the compression deformation of the rigid pressure-re...

AI Technical Summary

Problems solved by technology

During the working process of traditional rigid underwater glider, the increase of seawater density in the vertical direction will lead to the increase of the buoyancy of the glider, while the compression deformation of the rigid pressure shell with the working depth will cause its buoyancy to decrease. The two do not match

The magnitude of the buoyancy change is the same as that of the driving force, making it impossible to precisely control the stroke motion of the glider

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